如何从android中的图库中打开一个特定文件夹? [英] How to open one particular folder from gallery in android?

问题描述

我正在使用以下代码打开 android 默认图库应用程序.它会打开 sdcard 下的所有图像文件夹.如何只打开一个特定文件夹?

I'am uing the below code to open the android default gallery app. It opens all the image folders under sdcard. How can i open only one particular folder?

    Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    intent.setType("image/*");
    startActivityForResult(Intent.createChooser(intent, "Pick any photo"), SELECT_IMAGE_FROM_GALLERY_CONSTANT);

推荐答案

使用以下代码获取特定文件夹图像.

Use this following code to get a particular folder image.

import java.io.File;
import android.app.Activity;
import android.content.Intent;
import android.media.MediaScannerConnection;
import android.media.MediaScannerConnection.MediaScannerConnectionClient;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class SDCARD123Activity extends Activity implements MediaScannerConnectionClient {
    public String[] allFiles;
    private String SCAN_PATH ;
    private static final String FILE_TYPE="image/*";

    private MediaScannerConnection conn;
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        File folder = new File("/sdcard/Photo/");
        allFiles = folder.list();
        //   uriAllFiles= new Uri[allFiles.length];          
        for(int i = 0; i < allFiles.length; i++) {
            Log.d("all file path" + i, allFiles[i]+allFiles.length);
        }
        //  Uri uri= Uri.fromFile(new File(Environment.getExternalStorageDirectory().toString()+"/yourfoldername/"+allFiles[0]));
        SCAN_PATH=Environment.getExternalStorageDirectory().toString()+"/Photo/"+allFiles[0];
        System.out.println(" SCAN_PATH  " +SCAN_PATH);

        Log.d("SCAN PATH", "Scan Path " + SCAN_PATH);
        Button scanBtn = (Button)findViewById(R.id.scanBtn);
        scanBtn.setOnClickListener(new OnClickListener(){
            @Override
            public void onClick(View v) {
                startScan();
            }});
    }

    private void startScan() {
        Log.d("Connected","success"+conn);
        if (conn!=null) {
            conn.disconnect();
        }
        conn = new MediaScannerConnection(this,this);
        conn.connect();
    }

    @Override
    public void onMediaScannerConnected() {
        Log.d("onMediaScannerConnected","success"+conn);
        conn.scanFile(SCAN_PATH, FILE_TYPE);    
    }

    @Override
    public void onScanCompleted(String path, Uri uri) {
        try {
            Log.d("onScanCompleted", uri + "success" + conn);
            System.out.println("URI " + uri);             
            if (uri != null) {
                Intent intent = new Intent(Intent.ACTION_VIEW);
                intent.setData(uri);
                startActivity(intent);
            }
        } finally {
            conn.disconnect();
            conn = null;
        }
    }
}

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